Who's going to occupy San Jose's biggest office park? It's a mystery

San Jose's biggest-ever office park is about to be built—and the identity of the company remains a mystery.

Only Chuck Reed, the Silicon Valley city's mayor, knows who will ultimately occupy the 2-million-square-foot space, and he's not saying. We do know that it's a Fortune 500 tech company, that the development will cost an estimated $700 million, and 8,000 to 10,000 people will work there.

So, who's it going to be? A telecom like Sprint? Or a big player from outside the Valley like Amazon.com or Microsoft? Did someone say something about a Google barge? Take our poll, or speculate wildly in our comments.